Hose-nipple for air-hammers



F. ADKINS.

HOSE NIPPLE FOR AIR HAMMERS.

APPLICATION FILED MAY 3. 1919.

1 ,3 1 4,23 5 Patented Aug. 26, 1919.

FRANK ADKINS, OF WHEELING, WEST VIRGINIA.

HOSE-NIPPLE FOR AIR-HAMMERS.

Specification of Letters Patent.

Patented Aug. 26, 1919.

Application filed May 3, 1919. Seria1 No. 294,554.

To all whom it may concern Be it known that I, FRANK AnKINs, a citizenof the United States of America, and resident of lVhecling, county ofOhio, and State of West Virginia, have invented certain new and usefulImprovements in Hose- Nipples for Air-Hammers, of which the following isa specification.

This invention relates specifically to nipples for air hammers, and ithas for its primary object to provide an improved hosenipple structurewhereby rubber air-hose may be so attached to air hammers that chancedetachment and leakage are effectually prevented.

A further object is to provide a device of the character mentioned whichis not only simple and inexpensive in construction, but which obviatesvarious objectionable features of the nipples which are commonlyemployed as couplings for the air conducting hose of air-actuatedhammers.

In describing the invention in detail, reference is had to theaccompanying drawings, in which Figure 1 is a side elevation of theinvention showing an air hose attached thereto;

Fig. 2 is a longtitudinal section of the same; and- Fig. 3 is an endelevation of the invention.

Referring to said drawings, in which like designating charactersdistinguish like parts through the several views 1 indicates acollar-like body member having an integral reduced shank 2 extendingoutward from one face thereof. Said shank is exteriorly threaded toreceive the end of the usual bushing (not shown) whereby connection ismade with the butt of an air hammer. Also formed integral. with the body1 is a hollow cylindrical nipple 3 which is axially alined with saidshank 2 and extends in a direction opposite to that of said shank. Saidnipple is designed to receive thereon the end of a. flexible hose 1-through which air is conducted under pressure for actuating the airhammer to which the device is attached, as aforesaid.

Formed integral with the body 1 and normally lying approximatelyparallel to and at a suitably spaced distance from said nipple 3 is aplurality of long resilient fingers 5, each terminated at its outer endby a spur G which is inclined slightly rear ward and toward the axis ofthe nipple.

Said fingers are designed to have their outer ends bent inward slightlyfollowing application of the hose -:t to the nipple, to cause "the spurs(S to indent the thereby engaged portions of said hose to the extentthat said portions are caused to seat in an annular groove '7 formed insaid nipple adjacent to the outer end of the latter. Thus, not only dothe spurs sink into or embed themselves in the hose for resistingwithdrawal of the latter, but they also serve to depress knoblikeportions, as l", of the hose into the scat constituted by the annulargroove 7 for more ell'ectually guarding against witlulrawal of saidhose.

As herein depicted, the body 1 is of hexagonal form, :ulaptiug it forreceiving a Wrench thereon for ell'ecting attachment and detachment ofthe device with respect to the bushing or other form of coupling bymeans of which it is attached to the air hammer. Ilowever, it will beobvious that this body may be made of circular or any other appropriateform.

The chief objection to ordinary forms of nipples is that after one or.more hours use the nipple-receiving end of the hose becomes expanded orstretched by the air pressure conducted to the extent that leakageoccurs and that said end slips from the nipple. This objection isobviated by the present invention, the fingers thereof serving to soclamp the hose at a point adjacent to the free end of a relatively longnipple that little or no. air is permitted to leak past to a point whereit can act to expand the free end of the hose.

lVhat is claimed is- 1. A hose nipple for air hammers, comprising a bodyhaving a hollow threaded shank at one side thereof for coupling to anair hann'uer and having at the opposite side thereof a hose-receivingnipple, said shank and said nipple being axially alined, said nipplehaving an annular groove therein adjacent to its outer end, and aplurality of fingers extending rearward from said body approximatelyparallel to and at a spaced distance from said nipple, said fingersbeing terminated by inwardly directed spurs and being adapted to be bentdown upon the hose for depressing portions of the latter into saidgroove.

2. A hose nipple for air hammers, comprising a cylindrical nippleadapted for the reception of the end of a hose thereon, said nipplehaving an annular groove therein adjacent to its outer end, a threadedshank alined with said nipple and provided With a bore which joinsaxially With that of said 5 nipple, a collar-like body occupying anexternal position intermediate said nipple and said shank, and aplurality of fingers formed integral With and extending rearward fromsaid body, said fingers having l0.inwardly directed spur-like terminalsadapted to be embedded in the hose and to depress knoblike portions ofthe latter into seating position in said groove.

In testimony whereof, I affix my signature in presence of tWosubscribing Witnesses.

FRANK ADKINS.

Witnesses:

H. E. DUNLAP, A. L. DUNLAP.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

